consolidation of financial statements

A company will be treated as an Associate company of another company, if the former is having

(1) atleast 20% of the total share capital of the later ; 
                                           OR
(2) having influence over the later's decision making process under and agreement
                                           OR
(3)  Both are Joint venture companies

 

So yes if through the Common director there is influenc e over the Decision making of the 2nd company by the 1st company then yes it needs to be consolidated. However please do note that just having a Common director does not make the other company a subsidiary/Holding/Asoociate as per the companies act, 2013

if on the basis of right to appoint or remove majority of directors one company become holding company of the other company, then please guide how the consolidation will be done.
how to calculate minority interest, goodwill , capital reserve, . if we do Line by line consolidation of assets and liabilities then how to consolidate share capital and reserve and surplus of subsidiary company.